264 BYZANTINE CHURCHES CHAP, xvm respected. Hence convents were not allowed to be changed into monasteries, nor monasteries into convents.1 Architectural Features (For Plan see p. 261.) The building is a small oblong hall roofed in wood, and terminates at its eastern end in three semicircular apses. It is divided into two unequal compartments by a triple arcade placed near the western end. The side apses are shallow recesses, scarcely separated from the central apse, and show three sides on the exterior. The central apse projects six sides, and is now lighted by a large Turkish window. The western compartment, forming the narthex, is in three bays covered with cross-groined vaults. The cushion capitals on the columns of the arcade are decorated, on the east and west, with a rudely cut leaf, and on the north and south with a cross in a circle. Along the exterior of the south wall are traces of a string-course, of a cloister, and of a door leading to the western compartment. On the same wall Paspates2 saw, as late as 1877, eikons painted in fresco. The western entrance stands between two pilasters, and near it is an upright shaft, buried for the most part in the ground, probably the vestige of a narthex. In the drawing of the church given by Paspates,3 three additional shafts are shown beside the building. 1 Miklosich et M tiller, i. p. 221. 2 P. 376. 3 Ut supra.